Flame cutting burner apparatus



Feb. 9, 1932; L. J. HANCOCK 1,844,574

FLAME CUTTING BURNER APPARATUS Filed Nov. 29, 1930 Patented Feb. 9, 1932 LESLIE JOHN HANGQCK, OF SUTTON, SURREY, ENGLAND FLAME GUT'IIN G BURNER APPARATUS Application filed November 29, 1930; Serial No. 499,079.

This invention relates to flame cutting burner apparatus inwhich the burner is impelled over a workpiece by one or more wheels driven in any suitable manner, generally electrically.

The primary object of the invention is the provision of means for remotely effecting axial adjustments of the burner with respect to the workpiece. Such adjustment is highly desirable when the burner is cutting uneven surfaces, round bars, or irregular sections.

A further object of the invention is the provision in flame cutting burner apparatus of Bowden cable mechanism or modified Bowden cable mechanism for effecting burner adjustments from remote points.

Another object of the invention is the application of remote control means to cutting burner apparatus of the kind wherein the 7 cutting burner is mounted on the lower arm of a bifurcated member which carries a driving means at the end of its upper arm and is hinged at its yoke to a hinged frame, a horizontal pattern or templet table with the drawing or templet of which the driving means engages being located immediately beneath the said driving means and a horizontal work table being located beneath the burner.

7 Further objects of the invention will be clear from the following description and the accompanying drawings.

In these drawings Fig. 1 is a diagrammatic illustration of one form of known apparatus to which I prefer to apply my invention. It is to be understood that I do not limit myself to the use of this apparatus in carrying out my invention;

Fig. 2 is a side view of the bifurcated arm 1 of the said apparatus of Fig. 1 with a pushpull burner adjustment applied to it in ac cordance with my invention;

Fig. 3 is a side View of the end of an arm, such as the lower arm 2 of the member 1, Figs. 1 and 2, to which a mounting permitting of vertical adjustment of the burner has been applied; i

Fig. 4 is an end view of a device mounted on a part rigid with the arm 2 of Fig. 3,

such as the upper arm 3 of the member 1, Figs. .1 and 2, by which the Bowden cable that controls the axial movements of the burner canlbe tensioned and released to effect these movements.

In the known apparatus illustrated in Fig. 1 the bifurcated member 1 has arms 2 and 3 which respectively carry at their free ends a burner 4 and an electric motor 5 adapted to drive a traversing wheel 6. The wheel 6 bears upon a pattern table 7 immediately beneath it and has access to practically all parts of the top surface ofthe table by virtue of the member 1 being hinged at 88 at its yoke end to one vertical side of a frame 9 which is hingedly carried at its other vertical side by a post 10 upstanding from the bed 11 of the machine. As the wheel 6 traverses the table 7 the burner 4t carries out a similar .movement over a workpiece not shown, on a work table 12.

In Fig. 2 the upper arm 30f a member 1 rotatably carries a hand wheel 18 on the spindle 14 of which is a pinion 15 meshing with a rack 16. When the wheel is turned in one direction or the other the pinion causes the rack to slide to the right or left on a dovetail guide bar 17' mounted on the arm 3 andcable proper 18 of a Bowden cable fixed by one of its ends to'the rack are pulled or pushed along the interior of a rigid tube 19 mounted on the side of the member 1..

Thus the burner 4 is lifted or lowered because the other end of thecable proper of the Bowden cable is secured to the burner 4 by means of a clamping ring 20, the burner being slidably carried by a bracket 21 on the end of the arm 2. A Bowden cable without a tube 19 may be used, in which event the ends of the flexible case of the cable are anchored on the arms, the ends of the cable proper are secured to the rack and to the burner, and the burner is raised or lowered bypulling or slackening the cable proper by means of the hand wheel and rack.

In Fig. 3 the burner 4 is vertically slidable between pairs of rollers 22-22 the peripheries of which are grooved to receive the burner. The smaller roller of each pair is pulled towards its larger fellow by a spring 23 an- Mill chored at one end to its spindle 24 and at the other end to the spindle of the larger roller, the spindle 24 being movable in slots 25 in arms 26 of a bracket 27 fixed to the end of an arm 2. The case 28 of a Bowden cable is anchored to the arm at 29 and the corresponding end of the-cable proper 28' is fixed at .30 to the burner 4 the lower larger. wheel 22 being provided. with a narrow annular groove in the middle of a major groove for the reception of the burner. Alternately, the upper end of the cable proper may be fixed to a lug 34 on the drum, by known means comprising a screw threaded split sleeve and a closing nut, to a drum 31 rotatable on a stud 35 borne" by the arm3, as suggested in Fig. 4', the corresponding. end of the cable case. being. suitably anchored. Nlien the drumis turned inione direction by means of a hand wheel 32.

rigid with it, it winds the cable and lifts the.

burner 4.- Upon the hand wheel and drum being turned in the opposite direction the cable is slackened and the burner lowers by gravity, Before entering the case 28 Fig. 3

the cable passes over. a pulley 33 carried. by

the bracket 27;

hat I claim is:

1'. Inflame cutting burner apparatus,

meansfor axially adjusting the blow pip thereof from a point remote from the: said blow'pipe" comprisinga Bowden cable and a device for operating the cable, one end of the said cable being connected to the said operating device and the other end of the cable being connected to the said'bl'ow pipe.

2. In flame cutting burner apparatus, means for axially adjusting the blow pipe thereof, comprising a Bow-den cable, a rigid tube beyond the ends of which the cable projects and a device for shifting the cable along the tube, the opposite ends of the cable being connected to the said device and to the blow pipe respectively.

3; In flame cutting burner apparatus, means for axially adjusting the blow pipe thereof comprising a Bowden cable, a device including a rack and a pinion by which the cable is operated from one end, and a connection between theother end of the cable and the blow pipe.

In flame cutting burner apparatus, means for axially adjusting the blow pipe thereof comprising a Bowd'en cable, a rack connected to'one end of the said cable, a pinion meshing with the said rack and provided with a hand wheel, and a rigid connection between theotherend of the cable and the blow pipe of the apparatus.

5; In flamecutting burner apparatus, means for axially adjusting the blow pipe thereof comprising a Bowden cable, a drum connected to one end oft-he cable, means for rotating the drum, and a rigid connection between the other end of the cable and the blow pipe of the apparatus.

for axially adjusting the blow pipe thereof comprising aBowden cable, a device for operating the cable,.a mounting carrying spring rollers between which the said blow pipe is slidably: carried,.and connections at the opposite ends of the cable with the said operating' deviceand: with the blow pipe respectively.

8; Flame cutting'burner apparatus comprising in. combination, a machine with a bifurcated member carrying at outer ends of lower and upper arms thereof a blow pipe and an impeling device: respectively, av hinged frame hinged to. the bifurcated member, and means for axially adjusting the blow pipe comprising a Bowdencable and a device for operatingithe cable, one end of the said cable being connected to the said operating device and the other end of: the cable being connected to the saidblow pipe;

In: testimony whereof I aifiX my signature.

LESLIE 7 JOHN HANGOGK. 

